I've search hard to find an amp which uses muses01 opamp. I think the ideal thing is to find an amp which has a matching opamp with the your DD Socekt 1. I think once the analog signals enters the amp it will greatly alter it, you will not be able to hear it for what it is.
For example something like DD socket 1+OPA 627 will go perfectly with the portaphile.
Very few makers use Muses01. They're not cheap. If I'm not mistaken they're approx $40/DIP and 2 is needed for the DD's.
The new DD options have the metal cap OPA627 which are even ridiculously more expensive. Something like $150-200 per metal cap?